Forgot to clean new keg posts

Hey y'all, so I'm just getting into kegging and picked up a brand new 5 gal torpedo keg. I soaked it in PBW for a while and gave it some good shaking and then sanatized it with star san, however I just realized tha I forgot to clean the posts themselves. I'm sure the insides of them got a bit clean just from the violent shaking I did with the PBW and star san but I didn't get the outsides before I kegged my beer. I haven't noticed any huge off flavors but the first couple pulls have tasted a bit off, maybe somewhat of a metallic taste. Am I completely screwed or is it just all in my head? Also, anything at this point that I can do or is it too late?